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Trust our People.Trust our Data. Billings,MT 406.252,6325•Casper,WY 307.235.0515 <br /> ummE Gillette,WY 307.686.7175•Helena,MT 406.442.0711 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Energy Fuels Resources(USA)Inc Report Date: 08/29/23 <br /> Project: Whirlwind(Annual) Collection Date: 07/25/23 10:58 <br /> Lab ID: C23070846-003 DateReceived: 07/26/23 <br /> Client Sample ID: MW-1 Matrix: Aqueous <br /> MCU <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Alkalinity,Total as CaCO3 327 mg/L 5 A2320 B 07/28/23 14 34/slf <br /> Bicarbonate as HCO3 399 mg/L 6 A2320 B 07/28/23 14 34/slf <br /> Chloride 157 mg/L 1 E300 0 07/28/23 2338/slf <br /> Fluoride 0.3 mg/L 01 A4500-F C 08/08/23 12 38/dmb <br /> Sulfate 206 mg/L 2 E300 0 07/28/23 23 38/slf <br /> Calcium 45 mg/L 1 E200.7 07/31/23 18.34/eli-b <br /> Magnesium 14 mg/L 1 E200.7 07/31/23 18.34/eli-b <br /> Potassium 13 mg/L 1 E200 7 07/31/23 1834/eli-b <br /> Sodium 280 mg/L 1 E200 7 07/31/23 1834/eli-b <br /> PHYSICAL PROPERTIES <br /> ORP Measurement Temp 18 °C H A2580 B 08/02/23 16:52/eli-b <br /> Oxidation-Reduction Potential 168 mV H A2580 B 08/02/23 16-52/eli-b <br /> INORGANICS <br /> Sulfide 2 mg/L 1 A4500-S F 07/27/23 13-42/slf <br /> Sulfide as Hydrogen Sulfide(H2S) 2 mg/L 1 A4500-S F 07/27/23 13 42/slf <br /> PHYSICAL PROPERTIES <br /> pH 7.6 s.u. H 01 A4500-H B 07/26/23 15 57/tsa <br /> pH Measurement Temp 15.7 °C A4500-H B 07/26/23 15.57/tsa <br /> Solids,Total Dissolved TDS @ 180 C 946 mg/L 20 A2540 C 07/27/23 13.32/tsa <br /> Solids,Total Suspended TSS @ 105 C 40 mg/L 4 A2540 D 07/26/23 13-50/tsa <br /> NUTRIENTS <br /> Nitrogen,Nitrate as N ND mg/L 005 E353.2 08/11/23 11:33/dmb <br /> Nitrogen,Nitnte as N ND mg/L 001 A4500-NO2 B 07/26/23 1633/slf <br /> Nitrogen,Nitrate+Nitrite as N ND mg/L 005 E353 2 07/31/23 14.13/slf <br /> Phosphorus,Total as P 0 021 mg/L 0.005 E365 1 07/29/23 13.07/dmb <br /> METALS,DISSOLVED <br /> Arsenic 0 019 mg/L 0.001 E200 8 08/02/23 00.50/eli-b <br /> Barium ND mg/L 005 E200 8 07/31/23 20-00/eli-b <br /> Beryllium ND mg/L 0.001 E200 8 08/02/23 00-50/eli-b <br /> Boron 0.67 mg/L 006 E200.7 07/31/23 18 34/eli-b <br /> Cadmium ND mg/L 0 001 E200.8 07/31/23 20-00/eli-b <br /> Chromium ND mg/L 0 005 E200 8 08/02/23 00 50/eli-b <br /> Iron 017 mg/L 0.02 E200 8 08/02/23 00 50/eli-b <br /> Lead ND mg/L 0.001 E200 8 07/31/23 20:00/eli-b <br /> Manganese 0,014 mg/L 0 001 E200.8 08/02/23 00.50/eli-b <br /> Molybdenum 0 002 mg/L 0.001 E200 8 07/31/23 20:00/eli-b <br /> Nickel ND mg/L 0.005 E200 8 08/02/23 00 50/eli-b <br /> Selenium ND mg/L 0.001 E200 8 08/02/23 00 50/eli-b <br /> Uranium 0208 mg/L 0.0003 E200 8 07/31/23 20 00/eli-b <br /> Report RL-Analyte Reporting Limit MCL-Maximum Contaminant Level <br /> Definitions: QCL-Quality Control Limit ND-Not detected at the Reporting Limit(RL) <br /> H-Analysis performed past the method holding time <br /> Page 8 of 36 <br />